Samyang Reflex 300mm F6.3 UMC CS Lens

Samyang Reflex 300mm F6.3 UMC CS Lens
Regular price 1,333.00


The Samyang Reflex 300mm f/6.3 UMC CS Lens is a mirror lens designed specifically for use on APS-C-format DSLR cameras. The lens' Cassegrain design enables it to achieve a 480mm 35mm-equivalent focal length perspective within a compact and lightweight form factor that is significantly smaller than a traditional 300mm lens. It features a fixed f/6.3 aperture and utilizes manual focus operation for focusing as closely as 3.6'.

The mirror construction of the lens inherently works to reduce chromatic aberrations and a UMC (Ultra Multi Coated) coating has been applied to reduce surface reflections, lens flare, and ghosting while also contributing to improved overall contrast.

  • Mirror lens designed specifically for APS-C-format DSLR cameras.
  • Catadioptric system with Cassegrain design helps to reduce the overall size of the lens while still providing a 35mm-equivalent focal length of 480mm.
  • A UMC coating has been applied to the lens elements to improve clarity, minimize reflections, and enhance overall image contrast.
Technical Specs

Focal Length

300mm (35mm Equivalent Focal Length: 480mm)

Maximum Aperture


Minimum Aperture


Lens Mount

Canon EF/Nikon F

Format Compatibility


Angle of View


Minimum Focus Distance

3.61' / 1.1 m

Optical Design

8 Elements in 8 Groups

Focus Type

Manual Focus

Image Stabilization


Filter Size

25.5 mm (Rear)

Dimensions (ø x L)

2.54 x 3.00" / 64.52 x 76.20 mm


9.5 oz / 270 g